package com.github.zengfr.conuniframework.cloud.auth.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.authentication.configuration.GlobalAuthenticationConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.oauth2.config.annotation.configurers.ClientDetailsServiceConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;
import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.token.store.JdbcTokenStore;

import javax.sql.DataSource;

@Configuration
@EnableAuthorizationServer
public class OAuthConfiguration extends AuthorizationServerConfigurerAdapter {

  @Autowired private AuthenticationManager auth;

  @Autowired private DataSource dataSource;

  private BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();

  @Bean
  public JdbcTokenStore tokenStore() {
    return new JdbcTokenStore(dataSource);
  }

  @Override
  public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
    security.passwordEncoder(passwordEncoder);
  }

  @Override
  public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
    endpoints.authenticationManager(auth).tokenStore(tokenStore());
  }

  @Override
  public void configure(ClientDetailsServiceConfigurer clients) throws Exception {

    clients
        .jdbc(dataSource)
        .passwordEncoder(passwordEncoder)
        .withClient("client")
        .secret("secret")
        .authorizedGrantTypes("password", "refresh_token")
        .scopes("read", "write")
        .accessTokenValiditySeconds(3600) // 1 hour
        .refreshTokenValiditySeconds(2592000) // 30 days
        .and()
        .withClient("a-service")
        .secret("password")
        .authorizedGrantTypes("client_credentials", "refresh_token")
        .scopes("server")
        .and()
        .withClient("b-service")
        .secret("password")
        .authorizedGrantTypes("client_credentials", "refresh_token")
        .scopes("server");
  }

  @Configuration
  @Order(-20)
  protected static class AuthenticationManagerConfiguration
      extends GlobalAuthenticationConfigurerAdapter {

    @Autowired private DataSource dataSource;

    @Override
    public void init(AuthenticationManagerBuilder auth) throws Exception {
      auth.jdbcAuthentication()
          .dataSource(dataSource)
          .withUser("user2")
          .password("password")
          .roles("USER")
          .and()
          .withUser("admin2")
          .password("password")
          .roles("ADMIN");
    }
  }
}
